Antonio Frighetto efcda54794 [clang][CodeGen] Emit llvm.tbaa.errno metadata during module creation ...

Let Clang emit `llvm.tbaa.errno` metadata in order to let LLVM
carry out optimizations around errno-writing libcalls to, as
long as it is proved the involved memory location does not alias
`errno`.

Previous discussion: https://discourse.llvm.org/t/rfc-modelling-errno-memory-effects/82972.

2025-10-21 11:38:45 +02:00

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